Re: mod_proxy_balancer unbalancing?

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P.S. I'm using the by-requests balancing algorithm.  Perhaps I shouldn't be?

Jess Holle wrote:
Has anyone seen mod_proxy_balancer (in 2.2.11 with mod_proxy_ajp) becoming unbalanced in usage?

In testing we've seen it balance fine for a minutes/hours and then seemingly forget about one of the workers -- sending all session-less requests to another worker (we only have 2 live workers and multiple "dead" workers in the balancer set).

Later I see requests going to the forgotten worker again and I see nothing (with LogLevel set to debug) to denote that Apache ever found the worker unresponsive and thus put it in an error state.

Clearly I have more debugging ahead of me, but I just thought I'd check to see if such an issue has already surfaced.

--
Jess Holle

P.S. Yes, I could try mod_jk instead, but mod_jk lacks one critical capability -- the ability to throttle requests by queuing them up in Apache rather than simply returning a 503 when the AJP workers are max'ed out.

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